Breath sample receiving mouthpiece



FIG. 1 is a perspective view of a breath sample receiving mouthpiece showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof, with the left side elevational view being identical thereto;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a breath sample receiving mouthpiece, as shown and described. 